Remember the gestation period of the Lexus LFA, the one that, in automotive time, took so long that its origins could have been carbon dated? We feel like it's déja vu all over again, as Yogi Berra would have said, this time featuring the Audi Quattro and Audi Sport Quattro. It was 2010 when our cameras first glimpsed the Audi Quattro Concept (pictured right) at the Paris Motor Show, and we tasted its turbocharged 2.5-liter, five-cylinder powerplant not long after.

There have been two modern re-imaginings of the original 1984 Audi Ur-Quattro: the Quattro Concept of 2010 (shown above) and the Sport Quattro Concept revealed at the 2013 Frankfurt Motor Show. In between them, there have been numerous rumors about what, if any, kind of production car Audi might make of them. According to a new report in Auto Motor und Sport, Audi CEO Rupert Stadler has "indicated... that the car will come," and based on the specs presented, what we get might end up being a mix

Head of design for Audi, Wolfgang Egger, has told Auto Express that a reborn Quattro could enter production, but bosses for the company haven't yet decided whether to base it on the Sport Quattro concept that just debuted at this week's Frankfurt Motor Show or the smaller Quattro concept that was revealed at the 2010 Paris Motor Show.

We first saw the Audi Quattro Concept at the 2010 Paris Motor Show, and since then we've been tugged this way and that by a series of rumors as to whether the car will be built or not, and whether such a car will live at the accessible or the exalted end of the cost spectrum. A report in Germany's Auto Zeitung from June restarted the fires of gossip with a report that a production version of the concept will appear at the Frankfurt Motor Show, and put it firmly in the exalted sphere.

Remember Audi's perfectly lovely Quattro Concept from the 2010 Paris Motor Show? Of course you do. The latter-day Ur-Quattro is laser-etched in our brains as well – and not just because Audi was kind enough to offer our man Michael Harley a mountain drive of its seven-figure showcar. At the time, Audi hinted that the coupe might have a showroom future, but the gossip pipeline has long since gone dry, leading us to believe that the car's production hopes had soured.

This is sad news, depending on how you look at it. According to UK magazine Car, Audi will not produce a road-going version of the terrific Quattro Concept, first seen at the 2010 Paris Motor Show. Since its debut, we have driven it, we have loved it and now it seems we will not see a production version of it.

The Audi Quattro Concept revealed at the 2010 Paris Motor Show has, quietly, been trying to get enough traction to make a real run at production. The last we heard about it was April 2011, when the prototype engineers had a running model based on the S5 that was about 500 pounds lighter than an R8. In a poll we ran with that news, nearly 61 percent of you said you'd be interested in buying a production version of the Quattro if it were cheaper than the R8. If a report in German magazine Auto Bil